PM sensor for measuring particulate matter concentration in particulate filter and device thereof

Abstract

The present application provides a method and device for measuring the concentration of particulate matter in a particulate filter using a PM sensor, relating to the field of vehicle technology. The method comprises: obtaining a vehicle operating condition; determining a rough driving value based on the vehicle operating condition; determining whether the rough driving value is greater than a preset rough driving threshold; and controlling the PM sensor to pause measurement if the rough driving value is greater than the preset rough driving threshold. The rough driving value can be used to determine whether the vehicle is in a state of rapid acceleration, and measurement can be paused if a rapid acceleration is determined, thereby avoiding false fault alarms. This solves the problem of inefficient particulate filter capture, which can be mistakenly identified as a result of the vehicle's inability to recognize rapid acceleration.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a method and device for measuring the concentration of particulate matter in a particulate trap using a PM sensor. Background Art

[0002] The diesel particulate filter (DPF), also known as the diesel particulate filter, is commonly used in the wall-flow type. It uses a structure similar to a honeycomb carrier to filter and remove particles in the airflow. The airflow flows into one end of the channel and is blocked at the other end. The exhaust gas is forced to pass through the wall flow into the adjacent channel, while the particulate matter cannot pass through and is deposited as accumulated carbon soot.

[0003] According to national regulations, aftertreatment failures should be identified and reported by the engine control system. Prior art vehicles are able to detect and report aftertreatment failures, such as those caused by poor particle filter assembly, such as reduced capture efficiency. Specifically, prior art often uses a PM sensor installed downstream of the particulate filter to measure soot. If soot leaks downstream, causing the PM sensor to exceed the limit, this is considered a particulate filter inefficiency fault. However, even when the aftertreatment is functioning properly, a brief period of excessive soot during rapid acceleration can cause soot to leak downstream of the particulate filter, causing the PM sensor to exceed the limit and trigger a fault alarm. This is a false alarm, and prior art cannot distinguish this from a particulate filter inefficiency fault. Summary of the Invention

[0004] The present application provides a method and device for measuring the concentration of particulate matter in a particulate filter using a PM sensor, so as to at least solve the technical problems existing in the related art.

[0005] According to one aspect of an embodiment of the present application, a method for measuring the particulate matter concentration in a particulate filter using a PM sensor is provided, comprising: obtaining a vehicle operating condition; determining a rough driving value based on the vehicle operating condition; determining whether the rough driving value is greater than a preset rough driving threshold; and controlling the PM sensor to suspend measurement if the rough driving value is greater than the preset rough driving threshold.

[0006] As an optional implementation, the method further includes: obtaining a duration during which the rough driving value is greater than the preset roughness threshold; obtaining a cumulative value of the exhaust gas volume flow through the particulate filter during the pause measurement period; and determining a pause measurement period based on a duration during which the rough driving value is greater than the preset roughness threshold and a cumulative value of the exhaust gas volume flow through the particulate filter during the pause measurement period.

[0007] As an optional embodiment, determining the duration of the suspended measurement based on the duration during which the rough driving value is greater than the preset roughness threshold and the cumulative value of the exhaust gas volume flow through the particulate filter during the suspended measurement period includes: determining in real time whether the suspended measurement duration reaches the duration during which the rough driving value is greater than the preset roughness threshold; if the suspended measurement duration reaches the duration during which the rough driving value is greater than the preset roughness threshold, determining whether the cumulative value of the exhaust gas volume flow through the particulate filter during the suspended measurement period reaches a flow accumulation threshold; if the cumulative value of the exhaust gas volume flow through the particulate filter during the suspended measurement period reaches the flow accumulation threshold, controlling the PM sensor to begin measurement.

[0008] As an optional embodiment, determining the duration of the measurement suspension based on the duration that the rough driving value is greater than the preset roughness threshold and the accumulated exhaust gas volume flow rate passing through the particulate filter during the measurement suspension period further includes: if the measurement suspension duration does not reach the duration that the rough driving value is greater than the preset roughness threshold, controlling the PM sensor to continue suspending measurement until the measurement suspension duration reaches the duration that the rough driving value is greater than the preset roughness threshold.

[0009] As an optional embodiment, the method further includes: determining the duration of the suspended measurement based on the duration during which the driving roughness value is greater than the preset roughness threshold and the cumulative value of the exhaust gas volume flow through the particulate filter during the suspended measurement period further includes: if the cumulative value of the exhaust gas volume flow through the particulate filter during the suspended measurement period does not reach the flow accumulation threshold, continuously suspending the measurement until the cumulative value of the exhaust gas volume flow through the particulate filter during the suspended measurement period reaches the flow accumulation threshold.

[0010] As an optional implementation, it also includes: controlling the operation of the entire vehicle; judging whether the vehicle meets the measurement conditions of the particulate matter concentration of the particulate trap according to the vehicle operating condition; if the vehicle operating condition judges that the vehicle meets the measurement conditions of the particulate matter concentration of the particulate trap, controlling the PM sensor to start measurement.

[0011] As an optional implementation manner, the vehicle operating condition includes: vehicle speed, vehicle speed acceleration, throttle opening, throttle opening acceleration and a reference time window.

[0012] According to another aspect of an embodiment of the present application, a device for measuring the particulate matter concentration in a particulate filter using a PM sensor is also provided, comprising: an operating condition acquisition module for acquiring a vehicle operating condition; a driving roughness value determination module for determining a driving roughness value based on the vehicle operating condition; a judgment module for determining whether the driving roughness value is greater than a preset driving roughness threshold; and a measurement control module for controlling the PM sensor to suspend measurement if the driving roughness value is greater than the preset driving roughness threshold.

[0013] According to another aspect of an embodiment of the present application, an electronic device is provided, comprising a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus, and the memory is used to store a computer program; and the processor is used to execute the steps of the method for measuring the particulate matter concentration in a particulate collector by a PM sensor by running the computer program stored in the memory.

[0014] According to another aspect of an embodiment of the present application, a computer-readable storage medium is provided, in which a computer program is stored. The computer program is configured to execute the steps of the method for measuring the concentration of particulate matter in a particulate trap by a PM sensor when the computer program is run.

[0015] In an embodiment of the present application, a method for measuring particulate matter concentration in a particulate filter using a PM sensor is provided, comprising: determining a rough driving value based on the vehicle's operating conditions; determining whether the rough driving value is greater than a preset rough driving threshold; and controlling the PM sensor to suspend measurement if the rough driving value is greater than the preset rough driving threshold. This method can determine whether the vehicle is in a state of rapid acceleration based on the rough driving value and suspend measurement when a rapid acceleration condition is determined, thereby avoiding false fault alarms. This solves the problem of inefficient particulate filter collection, which can be mistakenly identified as a result of the vehicle's inability to recognize rapid acceleration. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 This is a flow chart of a method for measuring the concentration of particulate matter in a particulate trap using an optional PM sensor according to an embodiment of the present application;

[0019] Figure 2 This is a line graph of actual vehicle operation data of a normal particulate matter trap under rapid acceleration provided by an embodiment of the present application;

[0020] Figure 3This is a line graph of actual vehicle operation data of an abnormal particulate matter trap provided in an embodiment of the present application under normal vehicle operation conditions;

[0021] Figure 4 Schematic diagram of a device for measuring the concentration of particulate matter in a particulate trap using a PM sensor according to an embodiment of the present application;

[0022] Figure 5 This is a structural block diagram of an optional electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0025] According to national regulations, the engine control system should identify post-processing failures and report corresponding faults. In the existing technology, the vehicle is able to detect and report faults such as degradation of the capture efficiency caused by problems with the assembly of the particulate filter. Specifically, the existing technology mostly uses a PM sensor installed downstream of the particulate filter to measure carbon soot. If carbon soot leaks to the downstream of the particulate filter and causes the PM sensor to measure beyond the limit, it can be considered that the particulate filter has a low efficiency fault. However, when the particulate filter is normally assembled, the vehicle will have excessive smoke for a short period of time during rapid acceleration, which will also cause carbon soot to leak to the downstream of the particulate filter, causing the PM sensor to measure beyond the limit and cause a fault to be reported. In this case, it is a false alarm, and the existing technology cannot distinguish this from a fault of low efficiency of the particulate filter. For example Figure 2 and Figure 3As shown, the actual operating conditions of the vehicle when a normal particulate matter trap is in a sudden acceleration condition and when an abnormal particulate matter trap is in a normal vehicle operation condition are roughly the same, so the existing technology cannot effectively distinguish them.

[0026] like Figure 1 As shown, an embodiment of the present application provides a method for measuring the concentration of particulate matter in a particulate trap using a PM sensor, comprising:

[0027] S1 obtains vehicle operating conditions;

[0028] S2 determines a driving roughness value according to the vehicle operating condition;

[0029] S3: determining whether the driving roughness value is greater than a preset roughness threshold;

[0030] S4: If the driving roughness value is greater than the preset roughness threshold, control the PM sensor to suspend measurement.

[0031] When the existing technology is actually applied, vehicles equipped with normal post-processing will have the problem of PM sensor measurement exceeding the limit during sudden acceleration conditions, and it is impossible to effectively distinguish between normal post-processing and abnormal post-processing. The measurement method described in the present application can determine whether the vehicle is in a sudden acceleration state by the driving roughness value, and can suspend measurement when it is determined to be in a sudden acceleration state, avoiding the measurement of the vehicle in a sudden acceleration state, and thus avoiding the occurrence of false alarms. Thereby, the problem of misidentification as low capture efficiency of the particulate collector due to the vehicle's inability to recognize sudden acceleration is solved. Specifically, as an optional embodiment, the vehicle operating conditions include: vehicle speed, vehicle speed acceleration, throttle opening, throttle opening acceleration and a reference time window. The vehicle driving roughness value is calculated by the vehicle speed, vehicle speed acceleration, throttle opening, throttle opening acceleration and the reference time window, that is:

[0032]

[0033] in

[0034]

[0035] Where v is the vehicle speed, a1 is the vehicle speed acceleration, p is the throttle opening, a2 is the throttle opening acceleration, and t is the reference time window.

[0036] When the driving roughness value is greater than a preset roughness threshold, it can be considered that the vehicle is in a rapid acceleration state, and the PM sensor stops detecting to avoid measuring carbon soot downstream of the particulate filter during the vehicle's rapid acceleration time, thereby avoiding the vehicle's false alarm of particulate filter efficiency degradation.

[0037] It should be noted that this application does not specify the preset roughness threshold. Technical personnel may define it based on the vehicle's actual operating conditions. For example, the roughness threshold may be set to the value of the vehicle's roughness at the time when the vehicle begins to report an obstacle, without performing any evasive maneuvers. Furthermore, this application does not specify the reference time window t; it may be selected based on engine power.

[0038] As an optional implementation, the method further includes: obtaining a duration during which the rough driving value is greater than the preset roughness threshold; obtaining a cumulative value of the exhaust gas volume flow through the particulate filter during the pause measurement period; and determining a pause measurement period based on a duration during which the rough driving value is greater than the preset roughness threshold and a cumulative value of the exhaust gas volume flow through the particulate filter during the pause measurement period.

[0039] It should be understood that the measurement of carbon soot downstream of the particulate filter needs to be resumed for a period of time after the measurement is suspended to ensure the normal operation of the particulate filter. Therefore, it is necessary to determine the duration of the pause. The duration of the pause is related to the duration of the vehicle's rapid acceleration state, that is, the duration of the pause needs to be greater than or equal to the duration of the vehicle's rapid acceleration state, that is, it can be considered as the duration of the driving roughness value greater than the preset roughness threshold. In addition, it is necessary to determine whether the cumulative value of the exhaust gas volume flow during the suspension measurement exceeds the preset value to further confirm that the vehicle's rapid acceleration process has ended. Therefore, the method for measuring the particulate matter concentration of the particulate filter by the PM sensor described in this application can also include the following steps:

[0040] As an optional embodiment, determining the duration of the suspended measurement based on the duration during which the rough driving value is greater than the preset roughness threshold and the cumulative value of the exhaust gas volume flow through the particulate filter during the suspended measurement period includes: determining in real time whether the suspended measurement duration reaches the duration during which the rough driving value is greater than the preset roughness threshold; if the suspended measurement duration reaches the duration during which the rough driving value is greater than the preset roughness threshold, determining whether the cumulative value of the exhaust gas volume flow through the particulate filter during the suspended measurement period reaches a flow accumulation threshold; if the cumulative value of the exhaust gas volume flow through the particulate filter during the suspended measurement period reaches the flow accumulation threshold, controlling the PM sensor to begin measurement.

[0041] As an optional embodiment, determining the duration of the measurement suspension based on the duration that the rough driving value is greater than the preset roughness threshold and the accumulated exhaust gas volume flow rate through the particulate filter during the measurement suspension period further includes: if the measurement suspension duration does not reach the duration that the rough driving value is greater than the preset roughness threshold, controlling the PM sensor to continue suspending measurement until the measurement suspension duration reaches the duration that the rough driving value is greater than the preset roughness threshold.

[0042] As an optional embodiment, the method further includes: determining the duration of the suspended measurement based on the duration during which the driving roughness value is greater than the preset roughness threshold and the cumulative value of the exhaust gas volume flow through the particulate filter during the suspended measurement period further includes: if the cumulative value of the exhaust gas volume flow through the particulate filter during the suspended measurement period does not reach the flow accumulation threshold, continuously suspending the measurement until the cumulative value of the exhaust gas volume flow through the particulate filter during the suspended measurement period reaches the flow accumulation threshold.

[0043] As an optional implementation, it also includes: controlling the operation of the entire vehicle; judging whether the vehicle meets the measurement conditions of the particulate matter concentration of the particulate trap according to the vehicle operating condition; if the vehicle operating condition judges that the vehicle meets the measurement conditions of the particulate matter concentration of the particulate trap, controlling the PM sensor to start measurement.

[0044] Specifically, when the vehicle is running, the operating condition of the particulate trap is judged, and if the particulate trap can operate normally, the PM sensor is controlled to operate normally.

[0045] According to another aspect of an embodiment of the present application, a device for measuring the concentration of particulate matter in a particulate trap using a PM sensor is also provided. Figure 4 FIG. 1 is a schematic diagram of a device for measuring the concentration of particulate matter in a particulate trap using a PM sensor according to an embodiment of the present application. Figure 4 As shown, the device may include:

[0046] The operating condition acquisition module 401 is used to obtain the vehicle operating condition;

[0047] a driving roughness value determining module 402, configured to determine a driving roughness value according to the vehicle operating condition;

[0048] A judgment module 403 is used to judge whether the driving roughness value is greater than a preset roughness threshold;

[0049] The measurement control module 404 is configured to control the PM sensor to suspend measurement if the driving roughness value is greater than the preset roughness threshold.

[0050] Figure 5 is a structural block diagram of an optional electronic device according to an embodiment of the present application, such as Figure 5 As shown, it includes a processor 502, a communication interface 504, a memory 506 and a communication bus 508, wherein the processor 502, the communication interface 504 and the memory 506 communicate with each other through the communication bus 508, wherein,

[0051] Memory 506, for storing computer programs;

[0052] The processor 502 is configured to execute the computer program stored in the memory 506 to implement the following steps:

[0053] Obtain vehicle operating conditions;

[0054] determining a driving roughness value based on the vehicle operating condition;

[0055] determining whether the driving roughness value is greater than a preset roughness threshold;

[0056] If the driving roughness value is greater than the preset roughness threshold, the PM sensor is controlled to suspend measurement.

[0057] According to another aspect of the embodiments of the present application, an electronic device for a method of measuring the concentration of particulate matter in a particulate trap using a PM sensor is provided. The electronic device may be a server, a terminal, or a combination thereof.

[0058] The communication interface is used for communication between the above electronic device and other devices.

[0059] The memory may include RAM, or may include non-volatile memory, such as at least one disk memory. Alternatively, the memory may also be at least one storage device located away from the aforementioned processor.

[0060] It may also include but is not limited to other module units in the above-mentioned device for measuring the concentration of particulate matter in the particulate trap by the PM sensor, which will not be described in detail in this example.

[0061] According to another aspect of an embodiment of the present application, a storage medium is further provided. Optionally, in this embodiment, the storage medium can be used to execute program code of a method for measuring the concentration of particulate matter in a particulate trap using a PM sensor.

[0062] Optionally, in this embodiment, the above-mentioned storage medium may be located on at least one network device among the multiple network devices in the network shown in the above-mentioned embodiment.

[0063] Optionally, in this embodiment, the storage medium is configured to store program codes for executing the following steps:

[0064] Obtain vehicle operating conditions;

[0065] determining a driving roughness value based on the vehicle operating condition;

[0066] determining whether the driving roughness value is greater than a preset roughness threshold;

[0067] If the driving roughness value is greater than the preset roughness threshold, the PM sensor is controlled to suspend measurement.

[0068] For specific examples in this embodiment, reference can be made to the examples described in the above embodiments, which will not be described in detail in this embodiment.

[0069] Optionally, in this embodiment, the storage medium may include, but is not limited to, various media that can store program codes, such as a USB flash drive, a ROM, a RAM, a mobile hard disk, a magnetic disk, or an optical disk.

[0070] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0071] If the integrated units in the above embodiments are implemented in the form of software functional units and sold or used as independent products, they can be stored in the above-mentioned computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling one or more electronic devices (which may be personal computers, servers, or network devices, etc.) to execute all or part of the steps of the methods described in each embodiment of the present application.

[0072] In the above embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0073] In the several embodiments provided in this application, it should be understood that the disclosed client can be implemented in other ways. Among them, the device embodiments described above are merely illustrative. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, and can be electrical or other forms.

[0074] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected based on actual needs to achieve the purpose of the solution provided in this embodiment.

[0075] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0076] In the above embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0077] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for measuring the concentration of particulate matter in a particulate filter using a PM sensor, characterized in that: include: Obtain vehicle operating conditions; determining a driving roughness value based on the vehicle operating condition; determining whether the driving roughness value is greater than a preset roughness threshold; If the driving roughness value is greater than the preset roughness threshold, controlling the PM sensor to suspend measurement; Obtaining a duration during which the driving roughness value is greater than the preset driving roughness threshold; Obtain the cumulative value of the exhaust gas volume flow passing through the particulate filter during the pause measurement period; determining a pause measurement duration according to a duration during which the driving roughness value is greater than the preset roughness threshold and an accumulated value of the exhaust gas volume flow passing through the particulate filter during the pause measurement period; Determining the duration of the measurement suspension according to the duration of the driving roughness value being greater than the preset roughness threshold and the cumulative value of the exhaust gas volume flow passing through the particulate filter during the measurement suspension period includes: determining in real time whether the measurement suspension duration reaches a duration during which the driving roughness value is greater than the preset roughness threshold; If the measurement suspension duration reaches the duration during which the driving roughness value is greater than the preset driving roughness threshold, determining whether the accumulated exhaust gas volume flow rate passing through the particulate filter during the measurement suspension duration reaches a flow accumulation threshold; If the accumulated value of the exhaust gas volume flow passing through the particulate filter during the paused measurement reaches a flow accumulation threshold, controlling the PM sensor to start measurement; Wherein, the driving roughness value : in, is the vehicle speed, is the vehicle acceleration, is the throttle opening, is the throttle opening acceleration, is the base time window.

2. The method for measuring the concentration of particulate matter in a particulate trap using a PM sensor according to claim 1, wherein: The determining of the suspension measurement duration according to the duration of time during which the driving roughness value is greater than the preset roughness threshold and the cumulative value of the exhaust gas volume flow passing through the particulate trap during the suspension measurement period further includes: If the measurement suspension duration does not reach the duration during which the rough driving value is greater than the preset roughness threshold, the PM sensor is controlled to continue suspending measurement until the measurement suspension duration reaches the duration during which the rough driving value is greater than the preset roughness threshold.

3. The method for measuring the concentration of particulate matter in a particulate trap using a PM sensor according to claim 1, wherein: The determining of the suspension measurement duration according to the duration of time during which the driving roughness value is greater than the preset roughness threshold and the cumulative value of the exhaust gas volume flow passing through the particulate trap during the suspension measurement period further includes: If the accumulated value of the exhaust gas volume flow passing through the particulate trap during the suspended measurement period does not reach the flow accumulation threshold, the measurement is continuously suspended until the accumulated value of the exhaust gas volume flow passing through the particulate trap during the suspended measurement period reaches the flow accumulation threshold.

4. The method for measuring the concentration of particulate matter in a particulate trap using a PM sensor according to claim 1, wherein: Also includes: Control the operation of the entire vehicle; determining whether the vehicle meets the measurement conditions of the particulate matter concentration of the particulate filter according to the vehicle operating condition; If the vehicle operating condition determines that the vehicle meets the measurement conditions for the particulate matter concentration of the particulate trap, the PM sensor is controlled to start measurement.

5. The method for measuring the concentration of particulate matter in a particulate trap using a PM sensor according to claim 1, wherein: The vehicle operating conditions include: vehicle speed, vehicle speed acceleration, throttle opening, throttle opening acceleration, and a reference time window.

6. A device for measuring the concentration of particulate matter in a particle collector, characterized in that: A method for measuring the concentration of particulate matter in a particulate trap using a PM sensor as claimed in any one of claims 1 to 5, comprising: A working condition acquisition module is used to obtain vehicle working conditions; a driving roughness value determination module, configured to determine a driving roughness value according to the vehicle operating condition; a judgment module, configured to judge whether the driving roughness value is greater than a preset roughness threshold; The measurement control module is configured to control the PM sensor to suspend measurement if the driving roughness value is greater than the preset roughness threshold.

7. An electronic device comprising a processor, a communication interface, a memory and a communication bus, wherein: The processor, the communication interface and the memory communicate with each other via the communication bus, wherein: The memory is used to store computer programs; The processor is configured to execute the steps of the method for measuring the concentration of particulate matter in a particulate trap by using a PM sensor according to any one of claims 1 to 5 by running the computer program stored in the memory.

8. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, wherein the computer program is configured to execute the steps of the method for measuring the concentration of particulate matter in a particulate trap by a PM sensor according to any one of claims 1 to 5 when running.

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